package com.bdqn.Sj02;
//纸张实现类
public class TextPaper implements Paper{
    private int charPerLine = 16;       //每行字符数
    private int linePerPage = 5;        //每页行数
    private String content = "";        //纸张中内容
    private int posX = 0;               //当前横向位置，从0到charPerLine-1
    private int posY = 0;               //当前行数，从0到linePerPage-1
    private int posP = 1;               //当前页数
    @Override
    public void putInChar(char c) {
        content += c;
        ++posX;
        //判断是否换行
        if (posX == charPerLine){
            content += Paper.newline;
            posX = 0;
            ++posY;
        }

        //判断是否翻页
        if (posY == linePerPage){
            content += "==第"+posP+"页==";
            content += Paper.newline+Paper.newline;
            posY = 0;
            ++posP;
        }
    }



    @Override
    public String getContent() {
        String ret = this.content;
        if (!(posX == 0 && posY ==0)){
            int count = linePerPage - posY;
            for (int i = 0; i < count; i++) {
                ret+= Paper.newline;
            }

            ret+="==第"+posP+"页==";
        }
        return ret;
    }

    public void setCharPerLine(int charPerLine) {
        this.charPerLine = charPerLine;
    }

    public void setLinePerPage(int linePerPage) {
        this.linePerPage = linePerPage;
    }
}
